The argument to the Token constructor is something like the URL of the
page you are editing (e.g. 'http://localhost:1080/sputnik-program').
This will be used as a seed for the token generator. You then request a
token for a given field identifier (e.g. field name 'title' is mapped
to 'eH'). You use that token to identify your input field both when
generating the response as well as when processing the request. In
other words, the token is a translation map between external
identifiers (random) and internal ones (fix).

For a given prefix, the tokens generated change every 12 hours. It
internally uses LHF's lrandom and lmd5 [1][2].

This is rather experimental at the moment, so let me know what you
think.